Edging machine



1951 s. H. CODDINGTON QETAL 37 EDGING MACHINE .3 Sheets-Sheet 1 Filed April 1, 1947 INVENTORS 5/4/7051 A (opp/Mara Hiram/594' Dec. 11, 1951 Filed April 1, 1947 s. H. CODDINGTON ET AL 2,578,337

EDGING MACHINE 3 Sheets-Sheer; 2

Dec. 11, 1951 Filed April 1, 1947 S. H, CODDINGTON ETAL EDGING MACHINE 5 Sheets-Sheet 3 Patented Dec. 11, 1951 UNITED STATES PATENT OFFICE EDGING MACHINE Samuel H. Coddington, Detroit, and Walter Merry, River Rouge, Mich.

Application April 1, 1947, Serial-No. 738,664

1 Claim. '1

This invention relates to an edging machine, and more particularly to a device for cleaning up the edges of a burred strip of steel or other material.

Heretofore strips of steel or other material after shearing or cutting, have a burr or other irregularity formed upon their longitudinal edges. Often-times the material is slightly twisted or has a camber therein.

v It is the purpose and principal object of this invention to remove said burr and to also remove said camber.

It is the object of this invention to provide a machine having a plurality of dies through which the strip of material may be passed with the dies cooperatively engaging the opposite longitudinal edges of the material for removing the burr or other irregularities therein.

It is the further object of this invention to provide die means which tend to eliminate the camber of the material as well as adjustable rolls for pulling the material through the machine and alsil) to cooperate in straightening out said materia These and other objects will be seen from the following specification and claim in conjunction with the appended drawings in which:

Figure '1 is a plan view of the edging machine.

Figure 2 is a side elevational view thereof.

Figure 3 is a fragmentary section on line 3--3, Figure 1.

Figure 4 is a fragmentary section on line 4-4, Figure 1.

Figure 5 is a fragmentary section on line S -'5, Figure 1.

Figure 6 is a fragmentary section on line 6-6, Figure 5.

Figure 7 is a section on line 1--'!, Figures 1 and 4.

Figure 8 is a section on line 8-8, Figure 1.

Figure 9 is a fragmentary enlarged section similar to Figure 8.

Figure 10 is an enlarged view on line Ill-l0 of Figure 8.

Figure 11 is an elevational section on line l'I-l I, Figure 1.

Figure 12 is a transverse section on line l2-l2 of Figure 11.

Figure 13 is a fragmentary view on line I3--I3, Figure 2.

Figure 14 is a section on line l4-I4 of Figure 3.

It will be understood that the above drawings illustrate merely one preferable embodiment of the invention and that other embodiments are 2 contemplated within the scope of the claims hereafter set out.

Referring to the drawings, Figures 1 and 2, the

4 edging machine consists of legs ll, platform [2,

side members I3 and I4, and top members I 5 and I 6. A second platform I! is provided in a lower parallel plane to tops 15 and I6; and spaced platforms l8 are also mounted above and in spaced relation to platform l2.

Electric motor [9, Figures 2 and 13, is mounted on platform l2 with its rotatable spindle 20 carrying pulleys 2| to effect movement of drive belts 22, which rotate pulleys 2| on shaft 24.

Journals 23, Figures 2 and 13, are mounted in spaced relation upon platforms I8 to rotatably support the outer ends of drive shaft 24. The latter 'rotatively projects through free-wheeling clutch housing 26 so that upon rotation of said shaft in one direction sprocket 25 is rotated in a corresponding direction. Said free wheeling clutch is constructed so that rotation of shaft 24 in the opposite direction would effect no movement of sprocket 25.

In other words, sprocket 25 is actuated and rotated by shaft 24, yet said sprocket is free to rotate independent of shaft 24 as where said sprocket may be rotated faster than shaft 24 in the manner hereafter set out. Furthermore, rotation of shaft 24 in the opposite direction would affect no movement of said sprocket.

Shaft 24 thus turns sprocket 2'5 effecting movement of sprocket chain 28 in one direction transmitting rotative motion in one direction to shaft 29 through sprocket 30 thereon.

A reversing clutch mechanism 3! is keyed slidably upon shaft 24 for rotation therewith normally out of engagement with sprocket 21 loosely journaled on shaft 24. Lever 32 is pivotally supported at 34 at one end with its other end joined at 35 to the movable member 36 forming a part of solenoid 31.

The latter is mounted upon upright portion 38 of the device by bolts 39. Clutch 3| has an outwardly extending sleeve which projects around shaft 24 and has a pairof spaced collars 3! between which the central portion 32 of lever 32 projects.

When it is desired to reverse the operation of the device to back up the strip of material inserted therein for instance, motor I9 is manually reversed by a suitable switch not shown, and solenoid 31 is simultaneously energized. Shaft 24 will thus rotate in the opposite direction, and in view of the free wheeling clutch 26 rotates free of sprocket 25. Member 36 of said solenoid moves inwardly to engage the reversing clutch mechanism 3! with sprocket 21 to thereby drive the same in the reverse direction.

Chain 28 interconnects sprocket 21 and a corresponding sprocket 30' on shaft 29. Shaft 29 rotatably mounted within journal 4!] on base I2 projects into gear box 4! to efiect rotation in unison of shafts 42 and 43 which upwardly project therefrom and rotate as indicated in Figure 13.

Corresponding shafts 44 and 45 are joined to shafts 42 and 43 by universal couplings 46 whereby shafts 44 and 45 may be rotatively driven regardless of their adjustment transversely of shafts 42 and 43.

Referring to Figure 4, inwardlly projecting L shaped channel members 4'! project down from top members l5 and i 6 to which they are secured as by welds 48. Spaced transverse supports 49, Figures 1 and 4, rest upon the lower portions of members 41, while their opposite ends are suitably lsecured to the under sides of members I3 and 4.

The central support 59 is intermediate supports 49 and is likewise secured at its ends to the undersides of members 53 and 14. Guide bars 5| are mounted along the outer edges of su ports 49 and immovahly retained thereon by bolts 52. Central uide bar 53 is centrally mounted upon support 5n and retained thereon b bolts 54.

As s own in Fi ures 1, 3 and 4. there are four die carr in b ocks arran ed in pairs 54 and 55, each pair being slidablv mounted partially u on outer supports 49 and with their inner portions slidah v mounted upon portions of central support Ell.

Guide bars HI and 5 bear a ainst the side wa s of blocks 54 and 55 to uide their in and out ad ustrnents. and to retain said blocks against move ent transverse to their su ports 49 and 5!].

B ts as hroient do n thr u h corres on ing o enin s in bloc s 54 and 55 and are threa ed int re aining p ates 5! which slidahlv bear against the under sides of sup orts 49 and 5!),

and are intended to retain said blocks upon these supports.

As sh wn in i ures 1 and 3. each of the blocks 54 and 55 are interc nnected at their outer ends by tie bars 58 and 59. Tie bars 58 and 5. are immova ly ioined to the set of blocks 54 by screws M. However. the opposite ends of tie bars 58 and are adiustahlv joined to the set of blocks 55 by screws GI and t e lock nuts 52. Thus bloc s 55 may be adjusted in and out relative to blocks 54 and then set in any predetermined position. However. tie'bars 58 and 59 are also manually adiustable in and out being threadably joined by hand screws E3. The outer ends of said screws proiect through plates 64 secured upon the outer sides of members l3 and 14 by screws 65, Figure 2.

Screws 63 carry calibrated collars 66 which bear against plates 64 and are adapted to indicate the in and out adjustment of blocks 54 and P 55. Adjusting handles 5! are mounted on the outer ends of screws 53 so that on manual adjustment thereof blocks 54 and 55 may be moved in and out towards and away from each other, to accommodate the particular width of the stock sent through the edging machine.

Each of the two blocks 5d and the two blocks 55 have mounted thereon cover plates 58 secured in position by screws 69. Referring to Figure 3 block 54 is illustrated, being similar to the other 4 block 54 and the pair of oppositely arranged blocks 55.

It will be seen that block 54 is cut away at its top inner portion, while the bottom portion thereof projects inwardly and has a vertical opening therein within which are secured upright bearings Til. A corresponding bearing l! is aligned therewith and secured Within a corresponding recess formed in their inner portion of cover plate 68.

Rotatable shaft 44 thus projects up through and is journalled within bearings 19 and 1!. And similarly, rotatable shaft 43, Figure 13. Cylindrical die blocks 12 are respectively mounted upon the upperends of drive shafts 44 and 45 within their supporting blocks 54 and are rotatably secured upon said shafts by keys l3 thereon which project into corresponding recesses in said die blocks as illustrated in Figures 3 and 14.

Die blocks 12 mounted in spaced relation, Figure 1, have the central aligned annular concave recesses or dies 14 to cooperatively receive the opposite longitudinal edges of the strip of stock from which it is sought to remove the burrs thereon.

As illustrated in Figure 1 there is a second set of cylindrical die blocks 16 which are also annularly grooved to cooperatively receive and bear against the longitudinal edges of the strip of stock 15. Said blocks 15 are respectively mounted within their pair of supporting blocks 55 and are idly journalled therein by suitable shafts H which are rotatably journalled and supported within bearings Hi and H mounted and assembled as in Figure 3.

Referring to Figures 1, 2, 5 and 6 it is seen that a pair of spaced L shaped stock receiving guides 18 are mounted upon top member l5 and adiustably secured thereon by bolts 19 which project therethrough and through transverse slots formed in top member l5.

A second pair of spaced L shaped stock receiving guides 81 are mounted upon top member l6 and adjustably secured thereon by bolts 82 which project therethrough and through corresponding transverse slots 80 formed in top member I 6.

Members 18 guide the stock into the annular recesses 14 of die blocks 12, while members 8! guide the stock after it leaves the corresponding recesses in die blocks 16 until the stock reaches the rolls hereafter described.

Guides 18 are bent angularly outwardly to form a receiving mouth 83 for the stock (5 as it is projected thereinto.

As shown in Figure 5 a pair of elongated stock hold-down guides 84 are vertically mounted against the inner walls of guides 18 and angularly adjusted and secured therein by bolts 85 which project therethrough and through vertical slots 86 formed in members 18. Bolts 85 may thus be raised or lowered within slots 88 and retained in the desired adjusted position against upward movement by set screws 81.

Normally stock hold-down guides 34 will be set to the downwardly inclined dotted line position shown in Figure 6 thereby facilitating the entry of stock 15 thereunder. The leading lower edges 88 of stock hold-down guides 84 are angularly inclined upwardly providing a stock receiving mouth 89 to guidingly receive the stock 15 directing the same to the undersides of members A pair of substantially triangle blocks 98 projected inwardly from the inner edge of top memher I5 provide an extension therefor to ssupportingly guide the stock towards the grooves I4 in rotatable die blocks I2. Blocks 90 are mounted upon the under sides of the horizontal legs of guide members I8 and are secured thereunder by screws 9!.

Referring to Figures '7, 8, 9 and the central cross "support 50 has mounted thereon the pair of spaced supporting guides 92 upon 'whichth'e stock rides as it passes between die blocks 12 and I6. Guides '92 Figures 8 and 10 are mounted on member '50 for adjustment transverse to the movement of the stock for'accommodating varying widths thereof. Guides 92 are adjustably held down bybolts 93 which project therethrough and throughslots 94' formed in support 50.

Inverted L shaped stock hold-down members 95 are mounted over members 92 in inverted position, and slidably positioned thereon as illustrated in Figures 7, 8 and 9. Adjusting-screws 96 are threaded down through hold-down members 95 to threadably engage stock supports and guides 92. Thus members 95 may be raised or lowered with respect to guides 92 merely by adjusting set screws 96. Once properly adjusted to the height of the stock contemplated, they may be locked in position by the screws 9'! which interconnect members 95 and 92. To adjust members 95 screws'9'I must be first loosened.

Referring to Figures 1, 2, 11 and 12, a set of rolls is mounted upon platform H, which forms a part of the edging machine base, best illustrated in Figure 2. Said rolls have a rectangular support 98, positioned on platform I! and secured thereon by bolts 99.

A pair of bottom roll supporting members I00 are mounted in spaced relation upon support 98 and are retained in position by the same bolts 99, Figure 11. Each of members I00 is positioned between the spaced uprights posts I0! which are respectively joined to members I00 by screws I02. As illustrated in Figures 1 and 11, the inner edges of members I0! are centrally slotted at IOI' throughout their length to receive the central side projections I00 which form a part of members I00, and which project from opposite ends thereof.

Secondary upper adjustable roll supporting members I03 are positioned in spaced relation within uprights IOI and are vertically slidable therebetween. Spaced top cover plates I04 are positioned horizontally across the tops of the uprights IM and secured thereto by screws I05. Members I03 also have central side projections I03 which are slidably positioned and. retained I within the inner longitudinal slots IOI' formed within uprights IOI. Plates I06 with central openings I 07 are mounted upon the top of adjustable upper roll supports I03.

Said upper roll supports I03'are slidably adjustable vertically between upri-ghts I IiI'; and a plurality of coil springs I08 are interposed between roll supports I00 and I03 with their end portions respectively mounted within corresponding recesses I09 formed within said roll supporting members.

Upper roll supports I03 are thus resiliently mounted upon lower roll supports I00 which are normally in spaced-relation being urged upwardly by springs I08. Cover plate IIO extends across uprights IOI, bears against the under sides of members I04, and has a pair ofspaced threaded openings aligned with openings I0'I formed in plates I06.

Threaded adjusting means III project down eration.

through corresponding openings in covers I04 threadably engaging plate IIO with their lower ends operatively projected down into openings I01 to bear against plates I06. Thus it is seen that downward adjustment of either or both screws III will effect downward movements of plates 106 and either or both of the upper roll supports I03 against the action of springs I08. Likewise, by raising screws I I I, or either of them, either or both of said upper roll supports maybe elevated under the expansive action of said springs.

Screws III which'have a zero designating line II3 project up through stationary collars II2 upon which rotatable indicating members II4 are mounted. Members I It calibrated at II5 are adapted for rotationaladjustment lining up their zero designation with the lines I I3 on screws I I I,

once the same have been manually set to properly level upper roll I26. Set screws I I 6 are threaded transversely through members I I4 to frictionally bear upon screws III to 'lock members H4 in position. Now with members II4 movable with screws I I I it is possible to thereafter effect equal adjustments of the opposite ends of roll I26 by effecting equal adjustments of screws III. Furthermore screws III may be separately adjusted and thereafter may'still be returned to the initial zero position. Said screws have transverse slots III to facilitate manual adjustment thereof to raise or lower either or both of the upper roll supports I03. Hardened cylindrical roll II 8 has a central supporting shaft II9 whose projecting ends are rotatably journaled within bearings I20 carried within lower roll supports I00. One end of shaft II9 projects through support I00 and carries gear I2I and sprocket gear I22, both being secured thereon by key I23. Outer sprocket gear I22 is interconnected with a drive sprocket I24, which is suitably keyed to drive shaft 24, by a sprocket chain I25.

Thus, motor I9, Figure 13, is adapted to also effect rotation of the lower r011 H3 through pulley belts 22 and sprocket chain I25.

The upper adjustable cylindrical roll I29 has a central supporting shaft I21 whose projecting ends are rotatively journalled within bearings I28 carried within upper adjustable roll supports I03. One end of shaft I21 projects through support I03 and'carries a gear I29 which is retained thereon by key I30, and which is the same size as gear I2 I on lower roll shaft I I9.

Gear I29 is at all times enmeshed with gear I2I so that rotation of shaft II9 effects a simultaneous rotation in the opposite direction of the upper roll I 20. Operation of motor I9 will thus turn rolls H8 and I26 simultaneously in such manner as to draw the stock I5 therethrou-gh, once the leading end. thereof engages said rolls after passing between guides 8I shown in Figure 1.

The stock is normally mounted upon the edging machine or suitably supported adjacent thereto so that the leading end of said stock is projected on top member I5 for introduction into mouth 83 which forms a part of guides 3. The stock is manually or otherwise fed into mouth 89, Figure 6, below stock hold-down guides 34, and is suitably projected between guides I8. still bearing upon top member I5. It will be understood that stock hold-down members 9 2 also act as 'dies'in levelling the stock and tending to eliminate any camber therein which might have resulted from the previous shearing or cutting op- The stock then moves forwardly upon inwardly projecting supporting extensions 90 lllustrated in Figures 1 and 6 until the stock reaches inwardly turning die blocks 12.

Extensions 9!] thus act as a supporting guide in directing the stock and its opposite longitudinal edges so that the same project into the annular concave slots 14 which form a part of die blocks 12. The stock is thus frictionally engaged by said blocks to further introduce the stock into the machine and to project it forwardly. Said annular recesses have the effect of putting a slight radius upon the top and bottom edges on each side of the stock at the same time flowing the metal sufiiciently to eliminate any burrs from the longitudinal edges of the stock.

The stock leaves die blocks 12 and the recesses 14 formed therein, with the leading portion of said stock bearing upon guide blocks 92, Figure '7, and positioned below stock hold-down blocks or dies 95. Said guides 92 and 95 perform the very important function to keeping the stock straight and at the same time tending to eliminate any camber which may still exist in the stock. Said blocks function further to effectively retain the moving stock in a horizontal position so as to be properly introduced within the annular recesses I4 which form a part of the idle finishing die blocks 16. The stock is still moving in view of its frictional engagement with feeding die blocks I2.

The stock now moves forwardly between vertioal guides 8| on top member I6 and is projected between rolls I I 8 and I26 to thereby complete the edging operation, and to roll out any irregularities which have formed in the stock due to the flow of metal during the edging operation. The rolls function further to maintain the stock in a horizontal position and to further prevent formation of any camber in the stock. Or, on the other hand, to eliminate any possible camber which may still exist.

It is important to note that sprocket gear I22 is smaller and has fewer teeth or sprockets than its driving gear I24 with the result that roll shaft H9 and the interconnected rolls H8 and I26 rotate faster than drive shaft 24 and the two die block rotating shafts 42 and 43.

Consequently, as soon as the leading portion of the stock I is frictionally engaged between rolls H8 and I26 it is seen that its longitudinal movement is speeded up. Thus, the stock is now driving the die blocks 12 in View of its frictional engagement threbetween. Shafts 44 and 45 are speeded up and likewise interconnected drive shafts 42 and 43.

It follows also that shaft 29 from gear box 4| is speeded up with result that temporarily sprocket gears 30 and 25 are rotated faster than drive shaft 24. In View of the free wheeling clutch connection between shaft 24 and sprocket 25 it is seen that this speedup of sprocket 25 is quite possible inasmuch as said sprocket is free to move independent of shaft 24. Naturally, as soon as the stock leaves die blocks I2 it is seen that said blocks will slow down to their normal driven speed through their connection with drive shaft 24.

Under certain conditions it is desirable to effect vertical adjustments of the stock supporting delivery table I6 shown in Figures 1 and 2. It has been found that under certain conditions a slight camber in the stock can be eliminated either by raising or lowering table I6 by the adjusting means I3I which interconnect said table and its supports I3 and I4. Thus the stock after leaving die blocks I5 may be raised or lowered 8 slightly as it is guided into horizontal rolls II8,

After stock has had a shearing operation its edges on opposite sides thereof are differently formed, both being irregular, i. e. one side has a degree edge with a burr, while the other side has a chamfer and is otherwise irregular.

After stock has had a slitting operation both of the opposite sides thereof are cut at substantially 90 degrees, and both have a burr formed along the same corresponding lower corners. The edging machine described hereinabove is universal in its function to produce a finished stock whose edges will have a radius or other shape corresponding to the shape of the die recesses in the rotatable die blocks employed. In any event all irregularities in the longitudinal edges of the stock are eliminated regardless of whether the same is initially sheared or slit.

Die blocks I2 and 16 shown in the drawings have a substantially concave annular recess formed therein which is curved, and which is adapted to put a radius along the opposite corners at each edge of the strip stock corresponding substantially to the shape of said recesses.

t is naturally contemplated that the edging machine be equipped with a plurality of interchangeable dieblocks similar to blocks 72 and 76, but with different sizes of annular recesses depending on the gage of the stock, and also differently shaped recesses depending on the type of edge desired in the finished stock.

As illustrated in the drawings it is seen that the die blocks are easily removable from their supporting shafts and may be replaced or interchanged as and when desired.

Under some conditions it may be desired to round the opposite edges of the stock entirely, or to at least form an arc therein. The shape will depend entirely upon the shape of the recesses formed within a particular die block.

It is also contemplated that the edging machine will finish stock eliminating burrs and camber and end up with 90 degree edges. In this instance it is necessary that the recesses I4 in the die blocks be substantially rectangular in cross-section. In fact it is contemplated that the shape or crosssection of the annular recess could be varied considerably from angular, square, to arcuate depending upon the requirements of the finished products.

Having described our invention, reference should now be had to the claim which follows for determining the scope thereof.

We claim:

In an edging machine, a rotatable drive shaft, a gear box, a driving shaft operatively projected into said gear box, a sprocket gear secured on said driving shaft, a sprocket gear interconnected with said first sprocket gear and loosely journaled on said drive shaft, a free wheeling clutch on said drive shaft and engageable with said second sprocket for driving the same in one direction, a pair of spaced oppositely rotatable shafts operatively projecting from said gear box, a pair of rotatable die blocks mounted upon said shafts and having aligned annular concave recesses formed therein to operatively receive and forcefully bear upon the opposite longitudinal edges of a strip of stock as they draw the same therethrough at a predetermined rate of movement, a pair of interconnected oppositely rotatable vertically spaced rolls adapted to receive and compressively engage therebetween said stock after it passes said die blocks, a second sprocket on said drive shaft ro tatable therewith, a third sprocket gear joined to said rolls and having less teeth than said second gear, and a sprocket chain connecting said second and third gears interconnecting said drive shaft and said rolls to draw the stock through the machine at an increased rate of movement with the stock driving said die blocks at an increased rate of movement.

SAMUEL H. CODDINGTON.

WALTER MERRY.

REFERENCES CITED UNITED STATES PATENTS Name Date York Dec. 8, 1903 Number Number Number Name Date Kruger Mar. 30, 1909 Mathias Aug. 14, 1917 Jones Oct. 5, 1920 Sheperdson May 15, 1928 Kennedy May 20, 1930 Karius 1- May 12, 1931 Peters Jan. 9, 1934 Caldwell et a1 Apr. 27, 1937 Glenn Dec. 19, 1939 Cook Dec. 26, 1939 Smitmans Apr. 2, 1940 Yoder Nov. 30, 1943 FOREIGN PATENTS Country Date Great Britain Oct. 14, 1887 Great Britain Oct. 10, 1934 

